Rolling-mill.



Patented 1an. 30, |900.

c. M. Hoarau.

8 Sheets-Sheet l.

(No Model.)

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No. 642,449. Patented lan. 3D, |900.

l C. M. HORTDN.

ROLLING MILL.

#Application med Mar. 14, 1899.1

(No Model.) 8 Sheets-Sheet 2.

Patented lan. 30, |900. C. M. HORTON.

ROLLING MILL.

(Application fnled Mar. 14, 1889.) f (No Model.) 8 Sheets-Sheet 3 ma Nonms PETERS co. Hora-umu, wAsmNmou, nA c.

4mm wumimmnmm n' .1.-

Nu. 642,449. Patented 1an. so, |900.

c. m. Immun. K

RLLING MILL.

'Applxcatxon Bled Mar. 14, 1899.: (No Model.) 8 Sheds-Sheet 41 mnllunnm ...lllllxna l 6H" 2 nf A g t No. 642,449. i Patented 1an. 30, |900. C. M. HU'RTUN.

ROLLING MILL.

Application lod Mar, 14. 1899.; (No Modem 8 Sheets-Sheet 5.

mi wams grins cn. wmoivmo, wAsHwamN, D. c.

No. 642,449. Patented 1an. so, |900.

c. m.. HoRToN.

RQLLING MILL.

mppuqaeion mea mr. i4, 1895.), (N0Model. 8 Sheets-Sheet 6.

No. 642,449. i Patented'lan. 30, |900.

c.4 M. HnBToN. ROLLING MILL.

(Application led Mar. 14, 1899.) (No Mudel.) 8 SheAts-Sheet 7.l

No. 642,449. Patented lan. 30, |900. C. M. HURTON.

ROLLING MILL.

Application filed Mar. 14, 1899A (No Modei.)

8 Sheets-Sheet l NITEDA STATES- mcs.

PATENT noLLlNG-'MLL SPECIFICATION forming part of Letters Patent No. 642,449, dats. January so, 19o`o.

Appncaion sie@ March 14, 1 S99.

To @ZZ whom, itmty concern:

Be it known that I, CHARLES M. HoEToN, a citizen of the United States, residing at West Superior, in the county of Douglas and State of Visconsin, have invented certain new and useful Improvements in Rerolling-Mills and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates. to improvements in rerolling-mills, and is particularly adapted for rerolling beams or girders and connecting-plates, so as to join them together to form structural beams, posts, or girders.

It consists in amachine havingalowerxed feed-roller and upper adjustable feed-rollers and rerolling-rolls for engaging the parts to be rolled together exteriorly and interiorly of the box structure.

It further consists in a machine having upper and lower feed-rollers and lateral rerolling-rolls, adapted to roll the flanges of connecting-plates upon the flanges of girders or beams, and means for adjusting the said rerolling-rolls so as tol operate upon different sizes and Widths of beams.

It also consists in a machine having upper and lower feed-rolls and laterally-arranged rerolling-rolls, together with centrally-arranged rerolling rolls, adapted to roll the flanges of connecting plates or bars upon the flanges of suitable beams interiorly of the said box structure thus formed, and means for adjusting the parts to different sized beams.

It also consists in certain other novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 represents a side elevation of a rolling-mill constructed in accordance with my invention. Fig. 2 represents a top plan view of the upper portion of the same. Fig. 3 represents a top plan view of the machine, the upper portion ofthe frame and mechanism being broken away to better reveal the lower part of the mechanism. Fig. 4 represents an end elevation of the machine, looking at the same from the end at which the power is applied. Fig.

Serial No. 708,993. (No model.)

5 represents an end elevation of the opposite end of the machine, parts being broken away to better illustrate the mechanism. Fig. 6 represents a central vertical section through `the rolls employed in my improved mill. Fig.

7 represents a detail top plan view of pistonrolls and mechanism for operating and supporting the same. Fig. 8 represents a side elevation of the same. modified form of the yoke for supporting the centrally-arranged rerolling-rolls. Fig. 10 represents a form of roll required for feeding the connecting-plates,which have outwardlyextending flanges. Figs. 11 and 12 are detail views representinga pulley provided with side flanges which is employed in operating the rerolling-rolls, and Fig. 13 represents a fragmentary detail View showing the shafts of the exterior rerolling-rolls mounted horizontally instead of inclined. Fig. 14 is a detail view of one of the adj usting-shafts and a movable collar mounted thereon; and Fig. 15 is a side elevation of a portion ofthe said shaft, showing the movable collar and a gear not resting thereon.

1 and 2 in the drawings represent, respectively, lower and upper shafts mounted in a suitable frame, as 3, and adapted to carry lower and upper feed-rolls, and 4 represents a U-shaped yoke or arm for holding the interior rerolling-rolls in proper position.

My invention is designed especially for rerolling beams and bars and connecting-plates together which have already been rolled in other mills of the usual character, and is designed to produce structural beams, posts, and girders.

While the machine may be adapted to roll beams of various kinds and designs, yet my device is particularly well adapted for rerolling structural beams, such as illustrated in certain Letters Patent granted to nie-- namely, Patent No. 608,861, of August 8, 1898, and No. 611,202, of September 20, 1898.

As illustrated in Fig. 1 of the drawings, the

Fig. 9 represents a device may be employed for rolling beams,

IOO

the patents above referred to. The powershaft 1 preferably extends beyond the frame 3 at one end and carries an actuating gearwheel, as 8, which communicates with any suitable source of power as may be found desirable. Upon the shaft 1 is secured the feedroll 9, which supports the structure which is being rerolled in the machine. The shaft 2 is mounted directly above the shaft 1 and carries two or more feed-rolls, as 10 10, for assisting in feeding the beams forward. The rollers lO are preferably secured upon the shaft 2, so as to turn therewith, by means of' a feather or key, as 1l, so that while the said rollers may be adjusted to greater or less distances from each other upon the said shaft, yet they will turn therewith. The rollers may also be adjusted to different heights above the roller 9 by mechanism, which will now be described, for raising and lowering the shaft 2. The shaft 2 finds bearings in suitable bearing-boxes, as 12 12, which slide in guide-frames, as 13, in the frame 3. To each of the boxes 12 is secured a vertical screw, as 14, the upper end of said screws extending above the top of the frame and engagin g screw-threaded revolving nuts, as 15, suitably held in place upon the top of the said frame. The peripheries of these nuts 15 are formed with gear-teeth which are adapted to engage threads, as 16, formed upon the longitudinally-arranged shaft 17. It will thus be seen that by revolving the shaft 17 the threads thereon will engage and operate all the nuts 15 simultaneously, and thus raise and lower the screws 14, carrying the shaft 2. The shaft 17 may be revolved by means of a hand-wheel, as 18, through the medium of the shaft 19 and bevel-gears 20 and 21, as plainly illustrated in Fig. 2 of the drawings. It will thus be seen that the shaft may be quickly and easily adjusted to the desired height, so that the beams to be rolled can be properly fed between the rollers 10 and the roller 9. In order to rotate said shaft and yet make allowance for the adjusting of the same up and down, it is necessary to produce especially-arranged gearing to actuate the same. A gear-wheel, as l, is mounted upon the shaft l and meshes with a gear-wheel 1b, which in turn meshes with and actuates a third gear-wheel, as 1c. This latter gear-wheel 1c meshes with a gear-wheel 2, secured to the shaft 2. The gear-wheels 1b and 1C are pi votally mounted in a pivoted frame, as 1d, formed, preferably, of two side pieces and drawn together above the said gears, the lower end of the said frame being pivoted upon the shaft 1 upon either side of the pinion la. It will be seen that by thus pivoting these intermediate gears l1 and lc no matter if the shaft 2 is raised or lowered the intermediate gears can be kept in Contact with the gear 2 to actuate the said shaft 2. In order to hold the said gears firmly in place, the upper end of the frame 1d pivotally engages a slide 3, moving in suitable guideways formed in the frame 3. This slide 3n is adj usted by means of a screw-rod 3b, provided with a handle 3C. It will be readily seen that the frame and gears can be readily adjusted with accuracy by means of the handle 3cand that the gears will be held in place with great rigidity. .As above stated, the rollers 10 are also adapted to be adjusted longitudinally upon the shaft 2, and for this purpose each of the rollers 10 is provided witha fiange, as 22, which is engaged by an inclosing strip or collar, as 23, each collar being secured to a screwthreaded rod, as 24, the two rods 24 extending in opposite directions. The rods 24 are engaged by screw-threaded nuts, as 25, said nuts having upon their peripheries gear-teeth for engaging rollers, as 26, formed upon the lower ends of the vertical shafts 27. To the upper ends of the shafts 27 are splined gearnuts, as 28, the said nuts turning with the shafts 27, but being movable vertically thereon. This construction is rendered necessary because the shaft 2 is capable of a vertical adjustment. Each of the nuts 28 is connected by means of a shaft 29, which engages the said nuts by rollers 30, formed near its ends, as is clearly illustrated in Fig. 2 of the drawings. This shaft 29 may be revolved by turning the hand-wheel 3l, which is secured to a shaft 32, connected with the shaft 29 by means of bevel-gearing and 34. It will thus appear that by rotating the shaft 29 the shafts 27 will be caused to revolve and actuate the nuts 25, so as to move the threaded rods 24 longitudinally with respect to the shaft 2. and thus move and hold the rolls 10 in any desired adj usted position. It will thus be evident that the space between the rollers 9 and 10 and between the rollers 10 can be regulated precisely to suit the size of structural beam to be fed between them. The plates 7 are provided with fianges, `as 35, which are to be rolled upon the iianges of the beams 5 and 6 to connect the said beams together, all as is clearly shown and described in the abovementioned patents. In order to roll the said flanges upon the beams, I provide rerollingrolls, as 37 and 38, which are mounted upon the shafts 39 and 40 upon each side of the central portion of the machine. The rolls 37 and 38 are preferably formed with beveled annular portions, as at 41 41, of proper shape to roll the anges 35 down upon the beams 5 and 6. Inasmuch as the feed-rolls have been constructed and adapted to accommodate beams of different size it will be apparent that it is necessary to so mount the rerolling-rolls 37 38 that they may be also adjustable to accommodate beams and connecting-plates of dierent size. For this purpose the said rolls and their shafts 39 and 40 are mounted in adjustable supporting-frames, as 42 42, which are preferably arch-shaped transversely of the machine and extendV to the sides of the frame 3, where they engage frames or slides, as 43, and sliding bearings, as 44, as seen in Figs. 1 and 3. The arched frames 42 are preferably strengthened by suitable webbing, as

lOO

IIO

illustrated in the drawings. The outer portions of the frames 42 are provided with trunnions, as 45 45, which are -mounted in the bearings 44 44. These bearings are adapted to lit and slide upon guide edges of the frame 3,which guide edges are preferably T-sliaped, as seen at 46 in the drawings, so that the boxes may slide thereon, but cannot accidentally be detached from the same. The inner projecting portions at the bottom of the frame 42 engage inclined slots 47, formed in the slides 43, so that when the said slides 43 are -moved longitudinally the forward part of the frame 42 will be raised and lowered by the action of the said slides. The frames 43 rest upon supporting rails or projections, as 48, formed upon the sides of the frame 3, and illustrated in Figs. l and 5 of the drawings, the said slides 43 also engaging the T-shaped guides 46. The slides 43 are adjustable with respect to the frames 42 by means of screwthreaded rods, as 49, connected therewith, the said rods engaging threaded gear-nuts, as 50, which are limited in their movement by side ribs or lugs, as 51 51, connected with the bearing 44, as seen in Figs. 1, 3, and 5. Intermediate pinions, as 52, are also pivotally mounted between the limiting-yokes 51 and engage the gear-nuts 50, connecting them with pinions 53 upon the longitudinal shaft 54, one shaft 54 being mounted upon each side of the machine. These shafts are connected by means of bevel-gearing 55 and 56 with a cross-shaft 57, carrying a hand operating-wheel 58. Thus the shafts 54 upon each side of the machine may be operated simultaneously, so as to move the frames 43 longitudinally at the same time to raise and lower the inner ends of the frames 42, and thereby adjust the rerolling-rolls 37 and 38 to different heights. In order to adjust the said rerolling-rolls to greater or less distances from each other,the frames are connected by-means of shafts 59 59, arranged upon each side of the main shaft 1. `These shafts 59 are provided at their ends with screw-threaded portions which engage ball or socket nuts, as at 60, mounted in spherical bearings, as 61, in the frame 42. These spherical nuts are thus connected with the said frames 42 in such a manner as to form a swivel joint. The threads upon the ends of the shafts 59 are right and left with respect to each other, so that by rotating the said rods the spherical nuts and the frames 42 will be drawn towardor moved away from each other. Each of the shafts 59 is provided with a central gear, as r62, mounted in a suitable boxing and engaging bevel-gears, as 63, secured to inclined shafts, as 64. These inclined shafts 64 are connected by means of bevel-gearing with a cross-shaft 65, carrying at its outer end a hand operatingwheel 66. Thus both of the shafts 64 may be rotated simultaneously by means of the operating-wheel 66, and the rerolling-rolls 37 and 38 may be thus adjusted to any desired distance from each other. The trunnions 45 gear 68 must move therewith. The splines 69 are made of suflicient length to permit of such adjustment and yet to actuate the pinions or gears 68. In order that the gears 68 and 68 may be moved longitudinally of the shaft 1 with the gears 67, the said gears 68, as seen in Figs. 11 and 12 of the drawings, are provided with side plates, as 68a, which are secured in place by means of screws or bolts in any suitable manner. The rerollingrolls 37 and 38 thus receive their power directly from the shaft 1. The tie or connecting plates 7 are also provided with internallyarranged iianges 35, as well as those arranged externally, and in order to roll these upon the inner iianges of the beams 5 and 6 it is necessary to employ suitable interiorly-arranged rerolling-rolls, as 70. When only one connecting-plate 7 is being applied to the beams, the rerolling-rolls 70 may be supported in place by mounting them upon the yoke 4, a's illustrated in Figs. 1 and 6 of the drawings. This yoke extends downwardly between the rollers 10 and 9, so that the rolls 70 maybe held immediately between the said feed-rolls, as will appear by reference to Fig. 6. However, as it is often -necessary to roll the interior flanges upon the beams when two connecting- IOC plates are employed to apply a box-beam, it

is desirable at times to remove the yoke 4, and it is therefore removably mounted upon the frame 3. The yoke 4 is therefore formed with upwardly-extending T-shaped iianges, as 71, which engage suitable guides, as 72,

'supported in the upper part of the frame 3.

The yoke 4 is held in place upon the flanges or tracks 72 by means of sliding bolts, as 73, which bolts are connected by links, as 74, with a rock-shaft 75. A hand operating-leven, as 7 6, is preferably secured to the shaft 75, by which the bolts 73 may be withdrawn from their rocked 'position and permit of the removal of the frame 4. One arm of the yoke 4 is free, while the other arm is connected, by means of pivotal links, as 77 and 78, with arms 79, extending upwardly from the said supporting-frame. The guides or tracks 72 upon this side of the machine are preferably elongated, as seen in Fig. 6 of the drawings. The yoke 4 is actuated by means of a chain, as 80, connected to the said yoke at its ends by means of the lugs 81, said chain extending upwardly over a suitable pulley and sprocketwheel, as 82, and a similar sprocket-wheel, (not shown,) whichis preferably located upon the ceiling of the room'in which the machine IIO is placed. The sprocket-wheel 82 also forms an actuatin g-wheel formovin g the said chain, it being mounted upon the shaft 83, which is provided with a hand operating-wheel 84, by which it may be rotated. By actuating the chain 8O the yoke can be slid along upon the tracks 72 and entirely swung to one side of the machine upon the links 77 and 78, as is clearly indicated in dotted lines in Fig. 6 of the drawings. The yoke may be as readily replaced in its position again when it is desired to employit. It will be seen that the rerollng-rolls are preferably mounted upon a short shaft, as 85, which finds a bearing in the apex of the yoke 4. When one tie-plate 7 has been applied to the beams 6 and 5 and it is desired to apply a second one to the opposite edges of the said beams, the yoke 4 and the rerolling-rolls 70 are removed, as above described, from between the feed-rolls, and piston-rolls, as 86 and 87, are employed which are capable of entering the box or beam from the end. As illustrated in Figs. 7 and 8, these piston-rolls are mounted upon a piston-head, as 88, secured to the end of a piston-rod 89. The rolls 87 are preferably two in number, mounted upon a short shaft in the body portion of the head 88, while the rolls 8G are also two in number and are mounted upon a short shaft carried by a pivotal portion 90 of the head 88. The pivotal portion 90 is pivoted to the head 88, as at 91, its outer free end being adjustable with relation to the main body portion of the head 88 by inserting a wedge, as 92, of suitable thickness between the two parts. The thickness of the wedge may be varied according as it is desired to spread the rolls 86 and 87 farther apart or allow them to remain close together. The piston-rod 89 is made of sufficient length to extend clear through the box-beam and is secured at its outer end to a pivoted head, as 93, the said head being pivoted upon a base, as 94, located at a proper distance from the frame 3. The head 93 may be turned backwardly upon its pivotal point by means of its shaft 95, to the outer end of which is secured a hand operating-wheel 96. The pivotal head 93 may also support a number of piston-rods 89, as seen in Fig. 7 of the drawings, so that more than one may be used, according to the number of beams to be connected. Then it is not desired to use thel piston-rolls, they can be lifted out of place by means of a crane or other suitable device. The standards or posts 94 are preferably anchored in place, so as to firmly hold the piston-rolls in proper position. lVhen the piston-rolls are used, the rolls 86 engage the interior anges of the upper plate, while the rolls 87 roll the interior iianges of the lower plate upon the beams 5 and 6. Vhile the yoke 4 may be constructed so as to only carry one set of rerolling-rolls 70, as seen in Fig. 1, yet, as illustrated in Fig. 9, it may be adapted to support more than one pair of rerolling-rolls, according to the number of beams to be rolled together.

In order to properly adjust the yoke 4 to correspond with the adjustment of the arm portions of the machine, the frame which carries the tracks 72 is capable of being raised and lowered by means of the screw-shafts 97 97. These shafts 97 are preferably four in number, as seen in Fig. 2 of the drawings, and are connected up in pairs by means of the shafts 98 98, which engage said screwthreaded shafts 97 97 by means of suitable gearing. The shafts 9S are also connected by suitable gearing with a common cross-shaft,

as 99, which is provided with a hand operating-wheel 100. By turning the wheel 100 all of the screw-shafts 97 may be actuated simultaneously to raise and lower the yoke-supporting frame in the machine.

As seen in Fig. 13 of the drawings, the shafts of the exterior rerolling rolls 37 and 38 may be arranged horizontally instead of inclined, as heretofore described and shown. Of course the gears 67 and 68 in this instance need not be beveled, but will be straightfaced. As seen in Fig. 10 of the drawings, the feed-roller 9 has to be varied in its form sometimes in order to accommodate plates or bars of different shapes. For instance, those illustrated and described in Patent No. 611,202 the plates to berolled upon the beams may be provided with externally-extending iianges,\vhich may be accommodated by forming the feed-roller with grooves or depressions, as 101 101, illustrated in said Fig. 10. Of course it will be apparent that the roller might be changed to adapt it to other coniigurations of beams and plates, it not being intended to limit the patent to any precise form of roll or rerollingroll, but to adapt them to the kinds of beams and plates which it may be desired to join in making up structural or box beams.

It will be apparent from the above description that the parts of a box-beam may be thus readily rolled together and in a very speedy manner and that the machine can be readily adjusted to accommodate beams of different sizes and shapes, as may be required. The beams may be connected upon one side only or upon both sides, the suspended internal rerolling rolls being interchangeable with the piston rerolling-rolls at will.

Having now described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a rolling-mill, the combination with a suitable frame, of upper and lower feed-rolls mounted therein, means for rolling the material inserted, and means for raising and lowering the upper feed-rolls, and mechanical means for moving the upper feed-rolls to different distances from each other, substantially as described.

2. In a rolling-mill, the combination with upper and lower feed-rolls, of means for raising and lowering the upper rolls to accommodate beams of different sizes, means for actuating the shaft of the lower roll and means IOC) IIO

for transmitting motion from the lower shaft to the upper one, said means comprising a frame pivoted on one shaft and swinging with respect to the other one, adjustable gears mounted in said frame adapted to mesh with the gearing upon the shaft of the upper adjustable rollers in its different positions, substantially as described.

3. In a rolling-mill, the combination with lower and upper feed-rolls, of means for adj usting the shaft of the upper feed-rolls Vertically, gearing upon the shafts of the feedrolls, a frame pivoted at one end to the lower shaft and carrying intermediate gearing for communicating motion from one to the other, no matter what the adj usted position of the movable shaft, and a screw-shaft for holding the other end of said frame rigidly in its adjusted position, substantially as described.

4. In a rolling-mill, the combination with lower and upper feed-rolls, of exterior rerolling-rolls adapted to turn-over flanges of connecting-plates upon beams to form box structures, and means for adjusting the said rerolling rolls at different distances from each other, substantially as described.

5. In a rolling-mill, the combination with a lower feed-roll, of upper adjustable feed-rolls, exterior rerolling-rolls mounted in suitable frames, said frames being adjustable in the frame of the mill, and means for raising and lowering the inner adjustable ends of the said frames to vary the position of the rerollingrolls with respect to the material to be acted upon, substantially as described.

6. In a rolling-mill, the combination with lower and upper feed-rolls, of exterior rerolling-rolls,mounted upon shafts in pivoted frames, pivoted frames carrying said shafts and having trunnions engaging sliding journal-bearings, the inner end of the said frame also having projections which engage inclined slots formedin movable slides or frames, and means for adjusting the said movable slides or frames with respect to the trunnions of the pivoted frame,whereby the rolls may be raised or lowered in the machine, substantially as described.

7. In a rolling-mill, the combination with upper and lower feed-rolls of laterally-arranged exterior rerolling-rolls mounted upon suitable shafts, pivoted frames supporting the said shafts,l and pivotally mounted in movable bearings upon the frame of the mill, the inner ends of the said pivoted frames having projections engaging diagonal slots in movable slides or frames, the said frames resting upon guides or rails formed upon the frame of the machine, screws connected with said slides, gearing engaging the said screws and connected with each other by means of suitable shafting and hand operating means connected with saidshaft whereby the slides may be adjusted simultaneously to raise or lower the frames carrying the rerollingrolls, substantially as described.

S. In a rolling-mill, the combination with lower and upper feed-rolls, of laterally-arranged rerolling-rolls mounted in suitable frames, screw rods engaging swivelnuts mounted in the said frames, gearing engaging the said screw-rods and connected with a suitable hand means whereby the frames may be adjusted at different distances to each other, substantially as described.

9. In a rolling-mill, the combination with feed-rollers, of exterior rerolling-rolls mounted upon suitable shafts, frames carrying said shafts, means for adjusting them higher and lower in the frame, gearing upon the shafts of the said rerolling-rolls, and movable gears splined upon the lower feed-roller shaft for engaging the said gears upon the shafts of the rerolling-rolls for actuating the same, substantially as described.

l0. In a rolling-mill, the combination with suitable upper and lower feed rolls, and means for actuating the same, of interior rerolling -rolls adapted to work between the beams of the structure to be formed, said rerolling-rolls being supported by a suitable frame or yoke mounted in the frame of the mill, whereby the rerolling-rolls are supported between the 'upper and lower feed-rolls, substantially as described.

11. In a rolling-mill, the combination with upper and lower feed-rolls, of interior rerolling-rolls, a U shaped yoke for supporting the said rerolling-rolls, said frame having :tianges engaging horizontal tracks upon the frame of the machines, links pivotally connecting one arm of the said yoke to the frame, and a chain for operating the said yoke to remove it from between the feed-rolls or to replace it in position, substantially as described.

l2. In a rolling-mill, the combination with upper and lower feed-rolls, of rerolling-rolls adapted to turn over anges between the beams of the structure to be formed, a yoke for supporting the said rerolling-rolls, said yoke sliding upon rails or tracks in the frame, pivoted links for connecting one arm of the said yoke to the frame, a chain for removing and replacing said yoke between the feed rolls, and means for raising and lowering the yoke in the frame comprising vertical seg* ments connected by suitable gearing vwith a hand-operated means, substantially as described. l

13. In a rolling-mill, the combination with a lower feed-roll, of upper feed-rolls splined upon a suitable shaft, means for moving the said rolls to different positions upon the said shaft comprising casings or rings engaging annular projections on the said rolls, screwthreaded nuts engaging the said screw-rods, vertical shafts having worms for operating the said screw-nuts, splined gear-wheels secured tothe said vertical shaft and gearing connecting the said gear-wheels with handoperated means, whereby the said upper rolls may be adjusted at different distances from each other, substantially as described.

14. In a rolling-mill, the combination with IOO IIO

l upper and lower feed-rolls, of piston-rolls adapted to extend into the end of box structures to be rolled, said piston-rolls carrying rerolling-rolls for turning the iianges of connecting-plates over upon the lian ges of beams, substantially as described.

15. In a rolling-mill, the combination with upper and lower rolls, and means for actuat' ing the same, of piston-rolls mounted upon the pistonhead, one set of the said rolls being mounted upon the body portion thereof while the other set is mounted upon the pivotal portion of the said piston, whereby they may be adjusted to different positions with respect to each other by inserting wedges of different sizes between the parts of the pistonhead, pistou-rods secured to said head and engaging pivoted heads mounted upon suitable posts and means for turning said pivoted heads downwardly upon the said posts substantially as described.

1G. In a rolling-mill,the combination with lower and upper feed-rolls, of laterally-arranged rerolling-rolls mounted upon suitable shafts carried in adjustable frames, gearing upon the said shafts and splined gears upon the shaft of the lower feed-roll for actuating the said gears, each of the said splined gears com prising in its-construction a central toothed portion and side flanges bolted or otherwise secured upon the sides thereof, whereby the gears upon the shafts of the rerolling-rolls will carry the said splined gears back and forth upon the main shaft when the said frames are adjusted, substantially as described.

17. In a rolling-mill, the combination with upper and lower feed-rolls, of interior rerolling-rolls, a yoke for supporting the same between the upper and lower feed-rolls, said yoke engaging guides or tracks upon the frame, bolts for preventing the said yoke from moving upon the said tracks and means for withdrawing the said bolts when it is desired to move the yoke comprising a rock-shaft connecting with the bolts by means of links and means for rocking said rock-shaft Whereby the bolts may be moved back and forth, substantially as described.,

In testimony whereof I hereunto ai'iix my signature in presence of two witnesses.

CHARLES M. I-IORTON.

iVtnesses:

B. T. RANDALL, O. A. PORTER. 

